(This chapter is a background introduction, and you don't like it.) ）

Earth, NASA, Planetary Observation Program Group.

"Hi Jack, I have a picture here, do you want to see it?"

"Please, Tom, don't waste my time!" Jack said without looking up.

"I think you'd better come and have a look." Tom stood by his guns.

Jack looked up confused, "What did you find?" A new exoter-like planet? ”

"No, it's a picture of the edge of the solar system, there's a blurry dot here." Tom said, pointing to the picture on the computer screen.

The photograph is just a black background and a large number of small spots of light that are irregular, and no one other than a professional astronomer can associate it with the starry sky.

Jack made sure it wasn't Tom's miscalculation, "What do you think it is?" The tenth largest planet in the solar system? ”

When Pluto was first discovered, it was just an inconspicuous pixel in a photograph.

Tom shrugged, "I don't know, it's in the ecliptic plane, but it's incredibly fast!" As he spoke, he replaced it with another photo, and the blurred dot had moved half a centimeter away.

Jack was shocked: "Tom, have you checked the interval between the two photos?" ”

"It's confirmed, seven days apart, in the same direction."

"It can't be!" Jack stood up suddenly, "If it flies so fast, it has long surpassed the third universe, how can it keep spinning?" ”

"I'm weird too." Tom nodded approvingly, "Jack, should we follow it for a while?" At least determine what it is. ”

"Keep an eye on it, don't let it get out of your sight!" Jack said solemnly, "Also, don't let the SETI people know just yet. ”

Tom laughed, "Come on Jack, are you going to find the aliens before SETI?" ”

Jack said angrily, "Shut your mouth, Tom. ”

"Well, I'll listen to you!" Tom raised his hand in surrender.

From this day on, the two began to secretly monitor the extremely fast shadow, but there was never sufficient evidence to prove its identity, and two months later, the shadow was blocked by Jupiter and never appeared again.

Half a year later.

"Just give up?" Tom was extremely unwilling, feeling that he had just missed the Nobel Prize, "Jack, you can't think of a way anymore?" ”

Jack let out a long breath, "Voyager 1 and 2 are in the other direction...... Keep monitoring, maybe tomorrow it will come out on its own. ”

But that wait is twenty years.

Twenty years later, China.

On a summer night, the stars shine brightly.

Ye Fengchen said mysteriously: "Son, today is your birthday, and Dad will give you a gift." ”

The child jumped and jumped with joy, and coquettishly circled his father: "Daddy, Daddy, where is my gift?" Where is it? Where is it? "The child treats his father as a big tree and tries his best to climb up.

Ye Fengchen laughed, picked up the half-human-tall child with difficulty, and raised it high above his head, and the laughter of the father and son spread far away.

Wife Ye showed a knowing smile: "Old Ye, how can you still look like a child when you are such a big person?" ”

"Don't you like it!" Ye Fengchen put down the child with a smile.

The child who landed on the ground did not hesitate: "Dad, Dad, where's my gift?" ”

"Here we are!" Ye Fengchen led the child to the balcony and ripped off the flannel on the shelf.

The child let out a cry of surprise: "Telescope? Thank you Dad! ”

The child was ecstatic and fiddled with the brand-new astronomical telescope, but he never got the point, and had to ask for help pitifully: "Dad, teach me!" ”

The father, who had been prepared, laughed confidently: "Look at Dad! ”

The young mother smiled and gave her husband a blank look: "Virtue! ”

Ye Fengchen took a moment to adjust the focus, and quickly let go of the eyepiece: "Look, this is Jupiter!" ”

The child hurried over and immediately saw a red planet with stripes on its body, several inconspicuous moons around it, and a faint ring of light around his waist.

The child suddenly shouted in panic: "Dad, why is Jupiter gone?" ”

Ye Fengchen touched the child's head dotingly: "Didn't Dad tell you that the planets revolve around the sun, Jupiter has been moving, and in a while, it will run out of your camera." ”

"Oh!" The child suddenly realized. Eyes approached the lens again, and curious eyes searched around Jupiter, and sure enough, they found several large moons that were very conspicuous.

Suddenly, a large moon turned behind Jupiter, and the child's eyes lit up: "Dad, I found the satellite, five of them!" ”

"What?" Ye Fengchen was stunned, "Impossible, I'll take a look!" ”

He counted them in the eyepiece, one, two, three, four, five, one of which was quite a few and exactly five, and one of them only showed a small edge, but basically it could be judged that it was indeed a large satellite.

Ye Fengchen was stunned for a moment: "This, this, how is this possible?" "The gift for the child is just a small entry-level astronomical telescope, with limited magnification, and seeing four Galilean moons is the limit, and it is impossible to see the other moons of Jupiter, not to mention that the extra fifth moon is not smaller than the others.

"Dad, what's wrong with you?" The child asked curiously.

Ye Fengchen hurriedly covered up: "No, it's nothing, son, you wait for me for a while!" With that, he ran into the house, took out his mobile phone as fast as he could, pointed the camera at the eyepiece on the telescope, and took a few photos in a row.

However, the phasing of his mobile phone is extremely poor, and at night in low light, the results are even worse, and the pictures he takes are not even clear to Jupiter, let alone the moons of Jupiter, which are even fainter than Jupiter.

Ye Fengchen leaned over the eyepiece again to take a closer look, but found that the superfluous satellite was missing again.

His spirit was in a trance, and he couldn't help but silently ask himself: Could it be that I was wrong?

But what about the child, the child also saw it?

Ye Fengchen couldn't help but fall into a deep confusion.

Forty-seven minutes ago (Note: 1), Jupiter.

Behind the giant red planet, an ice-covered object slowly cuts into Jupiter's orbit, and the object gradually moves closer to Jupiter, just as it flies close to Ganymede.

Callisto the size of an aircraft carrier had no power to resist, was captured by the gravitational pull of this celestial body, and fell straight to the surface of the mysterious celestial body, more than 100 kilometers away from the surface, and the falling Ganymede had turned into a cluster of violently burning meteors.

A faint light suddenly rose from the surface of the celestial body, and this light hit the meteor with unmistakable accuracy, and the meteor immediately shattered, turning into dozens of pieces of various sizes.

Moments later, the shards hit the ground, causing a series of violent explosions that shot into the sky and illuminated Jupiter's back.

In the depths of the mysterious celestial body, two erect beings more than three meters tall stood side by side, staring at the violent explosion on the surface of the celestial body until the light dissipated.

One of them made a sound like the grinding of wood chips: "Your Majesty, the starship has arrived at its intended location. (Note 2)

"Good." The Homo erectus known as His Majesty said, "Is there any result of the research?" My Prime Minister. ”

"There are results." The Prime Minister replied, "Based on what has been observed, our armed forces are not certain to defeat the Blue Star Lord. ”

"Isn't the space technology of the Blue Star people very primitive? Have we weakened to the point where even a civilization that has not yet entered the age of astronautics cannot be defeated? ”

"The space ability of the Blue Star people is not strong, but their weapons are very advanced, our observations have found that they have mastered the law of the stars, and can use the power of stars to a limited extent, which is a height that our biological civilization will never be able to reach, give them enough time, the Blue Star people have the potential to become one of the most terrifying races in this universe."

"So what are we going to do? The starship can no longer fly into interstellar space, and if it can't occupy the Blue Star, our race will be destroyed. ”

"Your Majesty, we have cracked the life matter obtained from the edge of the galaxy, and those life matter are of the same origin as the Blue Star people, which will be the key to occupying the Blue Star."

"What do you want to do?"

"Biotechnology is our disadvantage, but it is also our advantage, although we can't get the samples of the blue star creatures, but with those life substances, we can deduce the life forms of the blue star creatures, develop a genetic virus that is only effective against the blue star creatures, and use the virus to eliminate the most powerful ruling population of the blue star."

"Just do it." His Majesty said.

A few days later, the International Astronomical Union announced that Jupiter had captured a wandering dwarf planet with a diameter of more than 5,400 kilometers and a mass equivalent to 86 percent of Earth's. This star squeezed Europa off the altar and became Jupiter's largest moon, and at the same time the largest moon in the solar system, there is no one!

A few months later, a group of inconspicuous asteroids broke out of Jupiter's gravitational range and slowly flew in the direction of Earth.

Nine years later, a massive meteor shower descended on Earth.

(PS: This is a pit, and only those who persist to the end will have the opportunity to dig out what is buried in the pit.) ）